diff options
| author | H. Peter Anvin <hpa@zytor.com> | 2014-05-04 10:00:49 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-08-07 14:30:26 -0700 |
| commit | cd4033c9ed9e9abf51a3fb033c34daff2ca8df24 (patch) | |
| tree | 672852bd2aa77740c75f3bd640a6f85b1f6c3a3d | |
| parent | cd91e9adf307219809355ad19509e0411d6d0a8c (diff) | |
x86, espfix: Make espfix64 a Kconfig option, fix UML
commit 197725de65477bc8509b41388157c1a2283542bb upstream.
Make espfix64 a hidden Kconfig option. This fixes the x86-64 UML
build which had broken due to the non-existence of init_espfix_bsp()
in UML: since UML uses its own Kconfig, this option does not appear in
the UML build.
This also makes it possible to make support for 16-bit segments a
configuration option, for the people who want to minimize the size of
the kernel.
Reported-by: Ingo Molnar <mingo@kernel.org>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Cc: Richard Weinberger <richard@nod.at>
Link: http://lkml.kernel.org/r/1398816946-3351-1-git-send-email-hpa@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | arch/x86/Kconfig | 4 | ||||
| -rw-r--r-- | arch/x86/kernel/Makefile | 2 | ||||
| -rw-r--r-- | arch/x86/kernel/smpboot.c | 2 | ||||
| -rw-r--r-- | init/main.c | 2 |
4 files changed, 7 insertions, 3 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig index af88b27ce313..0c152c8200b8 100644 --- a/arch/x86/Kconfig +++ b/arch/x86/Kconfig @@ -957,6 +957,10 @@ config VM86 XFree86 to initialize some video cards via BIOS. Disabling this option saves about 6k. +config X86_ESPFIX64 + def_bool y + depends on X86_64 + config TOSHIBA tristate "Toshiba Laptop support" depends on X86_32 diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 0fde29333ca0..111eb356dbea 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -27,7 +27,7 @@ obj-$(CONFIG_X86_64) += sys_x86_64.o x8664_ksyms_64.o obj-y += syscall_$(BITS).o obj-$(CONFIG_X86_64) += vsyscall_64.o obj-$(CONFIG_X86_64) += vsyscall_emu_64.o -obj-$(CONFIG_X86_64) += espfix_64.o +obj-$(CONFIG_X86_ESPFIX64) += espfix_64.o obj-y += bootflag.o e820.o obj-y += pci-dma.o quirks.o topology.o kdebugfs.o obj-y += alternative.o i8253.o pci-nommu.o hw_breakpoint.o diff --git a/arch/x86/kernel/smpboot.c b/arch/x86/kernel/smpboot.c index 9f009cc7fcb2..fe862750583b 100644 --- a/arch/x86/kernel/smpboot.c +++ b/arch/x86/kernel/smpboot.c @@ -267,7 +267,7 @@ notrace static void __cpuinit start_secondary(void *unused) /* * Enable the espfix hack for this CPU */ -#ifdef CONFIG_X86_64 +#ifdef CONFIG_X86_ESPFIX64 init_espfix_ap(); #endif diff --git a/init/main.c b/init/main.c index 600136515caf..2132ffd5e031 100644 --- a/init/main.c +++ b/init/main.c @@ -606,7 +606,7 @@ asmlinkage void __init start_kernel(void) if (efi_enabled(EFI_RUNTIME_SERVICES)) efi_enter_virtual_mode(); #endif -#ifdef CONFIG_X86_64 +#ifdef CONFIG_X86_ESPFIX64 /* Should be run before the first non-init thread is created */ init_espfix_bsp(); #endif |